The Oakley M2 Sunglasses won't weigh you down when you're mashing out miles on your bike or training the upcoming triathlon. The ultra light and super sleek O Matter frame increases peripheral vision with its wrap around design, and the integrated Unobtanium earsocks cling to your face when you're moving fast. In addition, interchangeable Nosebombs allow for a fine tuned fit. Filtering out harmful solar rays, the Plutonite lens blocks 100% of harmful UV radiation and high energy blue light that causes eye strain and hazy vision this lens is ultra durable, resisting impact from flying debris when you're hauling down a twisty trail. The lens' Iridium coating all models but polished foggrey balances light transmission for crystal clear optics. Allowing for extended clarity across the entire lens, Oakley's Polaric Ellipsoid lens shape removes distortion caused by the lens' intense curvature. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer andor birth defects or other reproductive harm.